Home / 478.16-717.11-204.21

Finding the Fourth Proportional to 478.16, 717.11 and 204.21

Calculator

Solution

The fourth proportional to 478.16, 717.11 and 204.21 is: 306.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    478.16 : 717.11 = 204.21 : x
  2. Step 2: Convert to fraction form
    478.16/717.11 = 204.21/x
  3. Step 3: Cross multiply
    478.16x = 717.11 × 204.21
  4. Step 4: Simplify right side
    478.16x = 146,440.01
  5. Step 5: Solve for x
    x = 146,440.01/478.16
  6. Step 6: Final answer
    x = 306.26

Related Problems

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.